I don't think there is a standard practice on these things. I've seen densities ranging from 0.2/1500, 0.2/3000 and 0.3/2000.
I only do these if there is an FPE that has specified the criteria. Travis Mack, SET MFP Design, LLC "Follow" us on Facebook: https://www.facebook.com/pages/MFP-Design-LLC/92218417692 Send large files to MFP Design via: https://www.hightail.com/u/MFPDesign Sent from my iPhone > On Jan 30, 2017, at 12:51 PM, T. Silva <[email protected]> wrote: > > Was OH2 specified or something you came up with? I was also looking at a self > storage facility with approx 11 feet height to bottom of joists and trying to > figure out the occupancy? What is the industry practice? > > Tony > > From: "John Paulsen" <[email protected]> > To: [email protected] > Sent: Monday, January 30, 2017 8:06:08 AM > Subject: RE: Floor mounted obstructions - ORDINARY HAZ > > Thanks Rocci, > > I discussed the situation with the contractor this morning and spacing the > heads over the top of the partitions seems to be the only logical course to > take. I will recommend that they meet with the plan reviewer and AHJ to > discuss the design approach. We have done a few of these multi-story, self > storage facilties with similar wall arrangements and while I admit the threat > to life is relatively small for these facilities, it might be a good time for > full scale fire test to give us better design direction before too many more > are built. Especially when you consider the varying degrees of hazardous > commodities people tend to place in their units. > > Everyone involved in the project is trying to provide the best protection > possible within the scope of the contract documents for this project. > Sometimes when you come across one of these grey areas, it’s hard to > determine a course of action that you are confident you can defend in the > event of a fire incident. > > Thanks to all who have contributed to this question, your input has been > greatly appreciated! > > In the immortal words of Captain Binghampton.. “Sometimes I could just > scream” (And yes I know I’m dating myself) > > Thanks, > > John Paulsen – SET > Crown Fire System Design > 6282 Seeds Rd. > Grove City, OH 43123 > P – 614-782-2438 > F – 614-782-2374 > C – 614-348-8206 > > > > From: Sprinklerforum [mailto:[email protected]] > On Behalf Of Rocci Cetani 3 > Sent: Monday, January 30, 2017 9:38 AM > To: [email protected] > Subject: RE: Floor mounted obstructions - ORDINARY HAZ > > I spoke with Matt Klaus about this at the AFSA convention and he basically > said there isn’t a “great answer” Try and place sprinklers over the tops of > the walls, if that’s not possible due to the size of the units have them, > build them higher, stagger the heads, and or get with the contractor and AHJ > and have them “approve” a method that has the most common sense….. My > response was that although the AHJ might be approving it ultimately it’s the > contractor that will be held liable in the event of a fire (and grilled by > the insurance attorneys), he agreed and said at least if you have something > in writing from the AHJ is shows the situation was discussed and this was the > best case scenario everyone could agree on…. > > Rocci Cetani III, CET > Designer > Water-Based Fire Protections Systems Layout, Nicet Level III > > Northern California Fire Protection Services Inc. > 16840 Joleen Way Bldg. A > Morgan Hill, CA 93037 > P-(408) 776-1580 EXT.111 > F-(408) 776-1590 > > > [email protected] > www.norcalfire.com > > CONFIDENTIALITY NOTICE: This message and any document accompanying it may > contain confidential information > belonging to the sender. The information is intended only for the use of > individual or entity named above. If you are not the intended recipient, or > the employee or agent responsible to deliver this message to the intended > recipient, you are hereby notified that any disclosure, copying or taking of > any action in reliance on the contents of this information is strictly > prohibited. If you have received this transmission in error, please > immediately notify us by telephone to arrange for return of the documents. > > From: Sprinklerforum [mailto:[email protected]] > On Behalf Of John Paulsen > Sent: Saturday, January 28, 2017 9:11 AM > To: [email protected] > Subject: Floor mounted obstructions - ORDINARY HAZ > > I am trying to determine the proper deflector distance from a partition with > the top located 18” below the sprinkler deflector. This is an Ord Haz Grp II > Self Storage facility with standard spray QR Tyco TY-FRB TY3131 uprights. Sec > 8.6.5.2 doesn’t give a table like 8.6.5.2.2 which is for Light Hazard only. > > If I have to space the heads as if the low partitions went all the way to the > deck, I will violate the 6’ minimum rule. What am I missing here? > > Thanks, > > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
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